iPhone/iPad/cloud calendar?
 

How far back in the iPhone calendar does it store/keep past inputs?
Btk

I don't know off hand. But if you go to the apple website on Safari, you can look up questions and answers. I'm sure you will find it there. I have to search some obscure info sometimes and others have always asked the questions before me, so the answers are there.
Good luck!

It saves info for about 3 months. If you are using the icloud the default setting for saving is 1 month. You may change the icloud setting by clicking on settings, then "Mail, Contacts, Calendars" button on left hand side and then scroll down to Calendars and click "sync" and you may choose from all events, events 6 months back, 3 months back ect. Hope this helped :)